EP 3735451 A1 20201111 - MATERIAL DESIGN FOR THE ENCAPSULATION OF ADDITIVES AND RELEASE
Title (en)
MATERIAL DESIGN FOR THE ENCAPSULATION OF ADDITIVES AND RELEASE
Title (de)
MATERIALENTWURF ZUR VERKAPSELUNG VON ADDITIVEN UND ZUR ABGABE
Title (fr)
CONCEPTION DE MATÉRIAU POUR L'ENCAPSULATION D'ADDITIFS ET LIBÉRATION
Publication
Application
Priority
- US 201862612754 P 20180102
- US 2018066998 W 20181221
Abstract (en)
[origin: US2019203100A1] Embodiments provide a method for controlled release of a cement additive for use in a wellbore. The method includes the steps of mixing an aramide capsule with a cement slurry to form an additive-containing slurry, and introducing the additive-containing slurry into the wellbore. The aramide capsule is formed by interfacial polymerization where an aramide polymer forms a semi-permeable membrane encapsulating the cement additive.
IPC 8 full level
C09K 8/467 (2006.01); C04B 20/10 (2006.01); C04B 28/02 (2006.01); C09K 8/487 (2006.01)
CPC (source: EP US)
C04B 20/1037 (2013.01 - EP US); C04B 28/02 (2013.01 - EP US); C09K 8/467 (2013.01 - EP US); C09K 8/487 (2013.01 - EP US); C09K 8/493 (2013.01 - US); C04B 24/121 (2013.01 - US); C04B 24/287 (2013.01 - US); C04B 28/04 (2013.01 - US); C04B 2103/0046 (2013.01 - US); C04B 2103/0062 (2013.01 - EP US)
C-Set (source: EP US)
Citation (search report)
See references of WO 2019135939A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
US 10619085 B2 20200414; US 2019203100 A1 20190704; CA 3087375 A1 20190711; CN 111587280 A 20200825; EP 3735451 A1 20201111; JP 2021508795 A 20210311; SA 520412244 B1 20220907; US 10858572 B2 20201208; US 11292955 B2 20220405; US 2020199434 A1 20200625; US 2021054256 A1 20210225; WO 2019135939 A1 20190711
DOCDB simple family (application)
US 201816230391 A 20181221; CA 3087375 A 20181221; CN 201880085170 A 20181221; EP 18834246 A 20181221; JP 2020536677 A 20181221; SA 520412244 A 20200617; US 2018066998 W 20181221; US 202016807332 A 20200303; US 202017092389 A 20201109